Underground conduit.



I. W. ORROCK.

UNDERGROUND CONDUIT.

APPLICATION FlLED 1AN.5. 1914.

1,155,610. v muted oct. 5, 1915.

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-trally throughout the length of their top UNITED STAFF@ ATF FICE..

JOI-IN W. ORROCKQOF MONTREAL, QUEBEC, CANADA, ASSIGNOR OF ONE-HALF TO HENRY H. VIAUGHAN, OF MONTREAL, CANADA.

UNDERGROUND CONDUITE.

Application led January 5, 1914.

To all whom t may concern Be it known that I, JOHN WILSON ORROCK, of the city of Montreal, in the Province of Quebec, Canada, a subject of the King of Great Britain, have invented certain new and useful Improvements in Underground Conduits; and I do hereby declare that the following is a full, clear, and exact description of the same.

My invention relates .particularly to insulated undei round conduits for steam and the like, and it has for its object to provide a base which will drain any water which would otherwise collect beneath the insulated steam-pipe, and to this end consists of a substantially flat base chambered throughout its width upon which pipe-supports are carried and the conduit section adapted to rest upon the base and inclose the pipe-supports and pipes thereon. For full comprehension, however, of my invention reference must be had to the accompanying drawing forming a part of this specification in which similar reference characters indicate the same parts, and wherein: Figure l is a longitudinal sectional view of a portion of building wall with my improved underground conduit, shown in elevation, connected thereto; Fig. 2 is a transverse vertical sectional view of my improved conduit taken on line A B Fig. 1; Fig. 3 is a longitudinal sectional View taken on line C D Fig. 2; and Figs. 4 and 5 are respectively a plan view of the bed-plate of one of the pipe supports and a transverse vertical sectional view of such bed-plate with anti-friction rollers resting thereon.

The base of my improved conduit consists of a series of vitrilied fire-clay hollow in verts b having a concavity extending censurface, the portions (l at each side of this concavity being preferably fiat. Each of these inverts is chambered throughout their width to provide water-runs e and divided by a longitudinal web f serving as a support yfor the concaved top, the bottom being preferably formed with a seriesof grooves or seats g three of such grooves being found satisfactory. A series of half-pipe sections of the usual tile make and each preferably twice as long as each invert rests upon the flat portions d of the latter and each has a socket at one end to receive the adjoining v Specification of Letters Patent.

Patented Oct. 5, i915.

serial No. 810,519.

end of the next section; these relative lengths enabling the joints of the conduit sections and inverts to be lapped.

A series of pipe supports, preferably castiron, are supported upon the flat portions d and across the concavities c, each consisting of a flanged bed-plate /c and rollers m. In conduits of sixteen inches width I have found it preferable to locate these pipesup ports at points about fifteen feet apart.

A11 insulated steam-pipe is indicated at p and an exhaust pipe at 1'.

When preparing to lay a conduit according to my invention a bed is first made of concrete preferably of one to two inches thickness for the purpose of securing even ground of a uniform grade. This concrete flows into the grooves or seats g and forms keys which correct any tendency of the conduit to work or creep laterally. The joints between the inverts and the half-pipe sections are made of waterproofcement and the entire conduit is covered with cinders, gravel7 or otheromaterial easily drained, the cut for .the conduit being located at suficient depth to avoid frost. i

In the illustration my improved conduit is shown leading to afnanhole s from which the water running through the invertl is drained through a grating tuto the sewer through a suitable trapped pipe not shown.

In laying this underground conduit the waterproof cement joint between the inverts is extended only half way down the same, .that is to say to a point a few `inches above the bottom thus leaving an open space at this point through which the water may be drained from the material surrounding the conduit into the water run-ways of the invertsthrough which it is conducted to the manhole and thence to the sewer.

With underground conduits of this construction it is impossible for water to collect 'beneath the insulated pipes, thus obviating the waste of heat experienced where water is allowed to collect.

What I claim is as follows 1. In an underground conduit the combination with an insulated conductor, of an invert presenting a comparatively wide and substantially fiat top and being chambered from side to side, said invert being located a half pipe resting upon the invert and inclosing the conductor; and meansfor preventing horizontal displacement of the said invert.

2. An underground conduit consisting of a series of alined inverts spaced slightly apart and connected to each other by a cement joint extending half-Way the depth thereof, each of the said inverts being chambered from side to side and presenting a substantially fiat top; an insulated conductor mounted upon the said inverts and a series of half-pipes resting upon the tops of the inverts and inclosing said conductor, and means for preventing horizontal displacement of the inverts, said inverts presenting substantially iat and comparatively wide tops for the purpose of accommodating half-pipes of various sizes.

3. An underground conduit consisting of a series of inverts each of which is chambered from side to side and presents a substantially flat top, the joints between such inverts having their upper portions sealed and their lower portions open and the top of the said inverts having a central longitudinal concavity flanked by flat portions; a series of pipe-supports bridging the concavity, consisting of anged bed-plates having rollers thereon; a series of half-pipe lengths resting upon the said flat portions; pipes a series of inverts each chamber-ed from side to side and presenting a comparatively Wide and substantially flat top spaced slightly apart, the adjacent ends of the said inverts being connected by a cement joint extending half-way down the same, and the top thereof having a central longitudinal concavity iianged byflat portions and the underside of the inverts having longitudinal recesses for 'the pui pose of preventing horizontal displacement thereof, a series of pipe supports resting upon the said fiat portions and bridging the concavities, a series of halfpipe lengths resting upon the said fiat portions and pipes supported upon the pipe supports, the half-pipe lengths resting upon the inverts and inclosing the pipes, the diameter of each said half pipes being less than the Width of the inverts.

In testimony whereof I have signed my name to this speciication in the presence of two Witnesses.

. JOHN W. ORROCK. Witnesses:

E. R. PE'rTs, WILLIAM J. C. HEwETsoN. 

